Apparatus for forming concrete walls.



Ne. 779,288. PATENTED JAN. 3, 1905. L. LAN.

APPARATUS FOR FORMING CONCRETE WALLS.

APPLI GATION FILED J N. 8; 1904.

3 SHEETS-SHEET l.

INVENTOR Louisiana WITNESSES.

ATTORNEYS UNITED STATES Patented January 3, 1905.

LOUIS LANE, OF TOLEDO, OHIO.

APPARATUS FOR FORMING CONCRETE WALLS.

SPECIFICATION forming part of Letters Iatent No. 779,288, dated January 3, 1905.

Application filed January 6, 1904. Serial No. 187,922.

To all whom it may concern:

Be it known that I, LoUIs LANE, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and Improved Apparatus for Forming Concrete Walls, of which the following is a full, clear, and exact description.

define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification,

in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a vertical section showing the mold adapted to form a solid wall. Fig. 2 is a vertical section showing the mold adapted to form a hollow wall. Fig. 3 is an elevational view of the structure shown in Fig. 2, with parts broken away to show the interior. Fig. 4 is a plan view of the structure shown in Figs. 2 and 3. Fig. 5 is a detail perspective view of the manner of joining the tie-rods to the side walls of the mold. Fig. 6 is a view illustrating a modification thereof. Fig. 7 is a detail view of the formation of the sections forming the side walls of the mold, and Fig. 8 is a detail view of a slightly-modified arrangement of the tie-rods and mold side walls.

Referring particularly to Figs. 1, 5, and 7, the outer side walls of the mold are made up of sections 10, formed, preferably, of wooden boards, and having, as shown best in Fig. 7, longitudinal grooves 11 formed in their meeting edges, these grooves having enlarged outer portions 11, and the mold-section 10, having matching notches 12 therein,forming a passage extending through the mold-wall and crossing the enlarged portions 11 of the grooves 11. The side sections 10 of the moldwall are placed one upon the other, as Fig. 1 illustrates, and are held in place by tie-rods extending between the mold-walls. As shown best in Fig. 5, said tie-rods 1 1 have threaded ends, with which are engaged internallythreaded sleeves 15. These sleeves fit within the matching notches 12 and have each a neck 16 and a head 17 the latter being provided with a kerf for the reception of a screw-driver or similar tool. The outer portions of the passages 12 allow the free movement of the screwdriver during the operation. Fitted within the slots 11 are tie-plates 18, having keyholeslots 18 therein. With the walls of these slots the necks 16 of the sleeves 15 are engaged, the heads 17 being passed first through the larger portion of the slot 18 and the parts then moved so as to place the neck 16 within the smaller partof the keyhole-slot18, thus looking together the parts 18 and 15 in the manner shown in Fig 1. This securely holds the side walls of the mold together, and the plastic material forming the wall may then be molded in between the side walls 10, as shown. After the wall is set the sections of the side walls should be removed, and by moving the tie-plates 18 so as to bring the heads 17 of the sleeves 15 opposite the larger portion of the keyhole-slots 18 said heads may be unscrewed from the tie-rods and drawn through the tieplate, leaving the tie-rods in the wall, the rods then serving to strengthen the wall, as will be apparent.

Fig. 6 shows a construction of the tie-rods which enables them to be withdrawn from the wall after the same has set. In this form of the invention the tie-rod 19 has at one end a neck 20 and a kerfed head 21, and the other end is screw-threaded, as shown. The screwthreaded end is adapted to engage in a correspondingly-threaded orifice in a tie-plate 22, and the end having the neck 20 and head 21 is adapted to engage a tie-plate 23, similar to the tie-plate 18. These parts 19, 22, and 23 are arranged with the mold-section the same as above described; but when the mold-walls are taken down the heads 21 of the tie-rods 19 will be left exposed, and by applying a suitable tool thereto they may be turned so as to loosen them within the concrete wall,

and then by drawing the tie-rods outward they may be entirely disengaged from the wall.

Fig. 8 shows an arrangement which enables the side walls of the mold to be constructed of relatively thin material. In this view 24 indicates the sections of the side walls of the mold, which are arranged with respect to the wall the same as the side walls 10 in Fig. 1. 25 indicates the tie-rod, and this rod is provided at each end with screw-threads. Engaged with the screw-threaded ends are in ternally-threaded sleeves 26, which have reduced threaded extensions 27, terminating in square portions 28 for the application of a wrench or equivalent tool. The side walls 24 may have rabbeted edges overlapped, as shown, and the reduced extensions 27 01 the sleeves 26 are passed through openings in the overlapped portions. 29 indicates battenplates which bear on the outer sides of the mold-walls and through which the reduced extensions 27 pass, the parts beingheld tightly together by a nut 30 working on each reduced extension 27. In using this form of the invention after this wall has set the nuts 30 and batten-plates 29 may be removed, and by applying a suitable tool to the squared part 28 of the extensions 27 the sleeves 26 may be unscrewed from the tie-rods 25, leaving the tierods embedded in the concrete wall, as before explained. It is apparent that metal sheets may be substituted for the planks 24.

To form hollow walls, I employ in connection with side walls of the mold the core illustrated in Figs. 2, 3, and 4. This core is formed of sheet-metal side walls 31, to the inner sides of which vertical battens 32 are suitably fastened. The ends of the sheetmetal side walls 31 are bent inward toward each other, as indicated at 31 in Fig. 4, and the two parts of the core are connected by tie-plates 33, which have sliding connection with the battens, as indicated by the broken lines in Fig. 2, enabling the two parts of the core to be moved toward and from each other for a purpose which will fully appear hereinafter. The inner extremities of the battens 32 are beveled, as indicated at 32*, and between these beveled portions are arranged wedges 34, extending horizontally and connected by vertically-extending screw-rods 35.

These screw-rods are engaged with nuts 36,

which are suitably secured within the wedges, and it is clear that by operating the screwrods the wedges may be moved toward or from each other, thus forcing apart the two side portions of the mold or relaxing the strain thereon, so as to enable them to be moved toward each other. In constructing a wall of any considerable size a number of these cores are required. The side walls of the mold are mounted in place and the various cores are placed between the side walls, properly spaced therefrom, and occupying the spaces between the tie-rods. The concrete is then molded in position between the outer side walls and the cores of the mold, and when the wall has set sufiiciently the outer side walls of the mold are removed, and then by relaxing the strain of the wedges on the battens 32 of the core the core may be retracted and withdrawn from the hollow portion of the wall, or, if desired, the cores may be removed first and the walls afterward.

Various changes in the form, proportions, and minor details of my invention may be resorted to at will without departing from the spirit and scope thereof. Hence I consider myself entitled to all such variations as may lie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A mold for concrete walls, comprising mold side walls formed of superimposed sectionshaving cavities formed in their meeting edges, members set in said cavities, and tierods for connecting the members, the tie-rods being each provided with a head engaging a keyhole-slot in the corresponding member.

2. A mold for concrete walls comprising mold side walls formed of superimposed sections, tie-plates fitting in longitudinal cavities formed in the adjacent edges of said sections and engaged with each section, the said sections having matching notches formed in their adjacent edges and crossing the said longitudinal cavities, and tie-rods extending between the mold-walls, the ends of the tie-rods extending into the passages formed by the said matching notches and connecting with the tieplates.

3. A mold for concrete walls, comprising mold side walls, tie-plates engaged therewith and tie-rods for connecting the tie-plates, the tie-rods being each provided at one end with a grooved head coacting with a keyhole-slot in the corresponding tie-plate.

4. A mold for concrete walls, comprising mold side walls, members engaged therewith, internally-threaded sleeves connected with said members, and a tie-rod extending between and screwing into the said sleeves.

5. A mold for concrete walls, comprising mold side walls, members engaged therewith, sleeves having removable connection with said members, and a tie-rod extending between and connected to the sleeves, said members having keyhole-slots therein and the sleeves having heads thereon coacting with the slotted members.

6. A mold for concrete walls, comprising mold side walls, members connected therewith, sleeves connected with 'said members, and tie-rods extending between and secured within the sleeves.

7. A mold for concrete walls, comprising mold side walls formed of superimposed members, provided with longitudinal grooves formed in the meeting edges, the adjacent or meeting portions of said grooves being enlarged, the superimposed members also having matching notches crossing the said enlarged portions of the grooves, tie-plates set in said grooves, a tie-rod, and means for removabl'y connecting the tie-rod with the said tie-plates.

8. A mold for concrete walls, comprising mold side walls formed of superimposed members having matching grooves formed in the meeting edges thereof, the said grooves having their adjacent ormeeting portions enlarged, the said members also having matching notches in their meeting edges crossing the enlarged portion of the grooves, tie-plates engaging the grooves of adjacent members, and tie-rods for connecting the tie plates, the tie-rods being each provided at one end with a head coacting with a keyhole-slot in the corresponding tie-plate.

9. In a mold for concrete walls, the combination with the side walls of the mold and means for holding the side walls in place, of a core placed between the side walls and spaced therefrom the said core comprising side sections each formed of an outer wall, the ends of the walls being bent inward toward each other, and vertical battens connected with the inner sides of the said outer walls and having their extremities beveled, an extensible connection between the side sections of the core, wedges arranged between the beveled portions of the battens, a nut connected with each wedge and a screw-rod engaged with the nuts and extending between the wedges.

10. In a mold for concrete walls, the combination with the side walls of the mold, and means for holding the side walls in place, of a core placed between the side walls and spaced therefrom, the said core comprising side sections having their ends bent inward toward each other, vertical battens secured to the inner faces of the side sections and having beveled portions, tie-plates connecting the two parts of the core, the said tie-plates having sliding connection with the battens, wedges acting between the beveled portions of the battens, and means for operating the wedges.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LOUIS LANE.

Witnesses:

EARLE WHITTON, RoY Gr. LANE. 

